Magneto-dynamo unit.



0.'HEINS.

MAGNETO DYNAMO UNIT. APPLICATION men Auc.12. 1915'.

1 ,250,870. Patented Dec. .18, 1917.

3 SHEETS-SHEET I.

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MAGNETO DYNAMO UNIT.

APPLICATION FILED AUG-12,19l5.

I Patented Dec. 18, 1917.

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A TTORIVE Y S 0, HEINS.

MAGNETO DYNAMO .UNIT. APPucmop men. AUG. 12, ms.

Patented Dec. 18,1917.

3 SHEETS-311E 51?!- q? nvmvroa A TTOR/VEYJ UNITED STATES PATENT OFFICE.

orrro HEINS, or NEW YORK, N. Y., nssrenoa TO Boson MAGNETO COMPANY, or NEW YORK, 1:. Y., A CORPORATION or NEW Yonx.

Specification of Letters Patent.

MAGNETIC-DYNAMIC UNIT.

- Patented nec.1s,1917.

Application filed. August 12,1915. Serial No. 45,211.

To all whom it may concern:

Be it known that I, Orro Hams, a subject of the Emperor of Germany, residing in the city, county, and State of New York, have V invented certain new and useful Improvements in Magneto-Dynamo Units; and I do hereby declare the following to be a full,

clear, and exactdescription of the invention,

' such as will enable others skilled in the. art

to which it appertains to make and use the same.

It is now customary to provide a direct current dynamo for furnishing current to the incandescent lamps and storage battery on moving vehicles such as automobiles, motor boats, cycle cars and motor cycles. This dynamo is of small capacity andits 'best speed is about two to four times the speed of theainternal combustion engine which drives it and the vehicle. The magneto furnishing ignitioncurrent to the spark plugs is likewise driven by. the engine but its. speed, unlikethe speed of'the dynamo, must be in fiized'ratio with the speed of the engine and when of the bipolar type the speed must-be equal thereto for a four cylinder, four cycle engine, and one-half thereof for a two cylinder, four cycle engine. For these reasons, it is undesirable to arrange the armatures of the magneto and dynamo on the same shaft, and prior equipments so designed are not well adapted for the pur pose. Furthermore, the magneto should have a permanent field, so. as to generate satisfactory sparking voltages at the lowest possible speedin starting and running, and also so as to provide a substantially constant field strength at all speeds and thus furnish more intense ignition at the higher speeds of the engine when the time for combustion is less. In contradistinction to these requirements, the lighting dynamo should, at all running speeds, generate a substantially constant voltage, or produce a substantially constant current, depending upon the system of regulation, and it is usual to do this by regulating the field strength in such manner as to compensate for the varying speed of the engine. Thus it has been found after considerable experimentation, that the consolidation of the magnetic circuits of the magneto and dynamo is detrimental to the best performance of the magneto or of dynamo, or of both. It follows, therefore, that combination equipments in whi h the permanent, magnet of the magneto forms even a part of the magnetic circuit of the dynamo are not well adaptedfor the purpose. In the invention herein disclosed, the

disadvantageous construction of the prior ployed for the dynamo; and preferably the two are magnetically separated, as for instance by the interposition between the two magnetic structures of material of relatively low permeability.

In addition to the foregoing requirements,

the magneto and dynamo should be compacted so far as possible, and also reduce to such overall dimensions as tobe capable of nice association with the engine and its auxiliaries. This is especially true in the case of a motorcycle where space is very limited, and where the supported weight should be a minimum. Moreover, the driving connection dynamo should be as simple as possible, so as to render the installation light, quiet and efficient. I attain these additional objects in the preferred form of construction by arranging the axis of the magneto armature along the length of the magnet arms, and by fastening the dynamo to the magneto along one of its four sides and in such manner that the two armatures rotate on parallel axes in geared connection with each other. In this way, the mechanical interrupter on the armature shaft of the-magneto may be arranged within the arch of the magneto in an accessible but well protected position, while the outer end of that shaft is adapted for coupling to the engineand for the use 'mensions, but the parts are well protected and accessible.

These and other features of novelty are disclosed hereinafter in connection with the accompanying drawings which illustrate the preferred embodiment of my invention as a of a chain or other form of gearing for drivmagneto dynamo unit suitable tor motor cycle or cycle car and comprising lighting dynamo and a high tension magneto for an engine having V-arranged cylinders, as example. In these drawings,

Figure 1 represents side elevation the unit; a

Fig. 2 represents a top plan view thereot;

Fig. 3 represents an elevation of outer end. of the unit, with part of the gear nous ing removed to show the driving Fig. 4 represents, on an. enlarged s ale, an elevation of the inner end of unit, with the magnet arms in. section on line l-d of Fig. 6;

Fig. 5 represents a sectional e evation on line 5-5 of Fig. 6; and

Fig. 6 represents-a view, par and partly in elevation, longitudinal plane oi tie it The magneto is of the high tension with an armature and mechanical rupter as shown in the United to Gottlob Honold, No. 974,96? for generat ing sparking voltages atthe irregular intervals required by V-arrangcd cylinders a motor cycle engine. By arranging the arms.- ture 1 of the magneto along 'the length the arms 2 of the permanent magnet, the magnet is narrower and longer than the usual type in which the armature extends at right angles to the length of the arms, and these new proportions aid in producing the desired proportions of the complete unit. 3 is adapted for coupling to the engine, and at its inner end it carries the adjustable mechanical interrupter 4 Within the arch of the magnet Where it is accessible for inspecoil tion, repair and spark adjustment, and

well protected from mechanical injury. The timing lever 4 extends up Wardly and to one side of the dynamo in conrem'ent position for connection with the spark adjusting lever.

The members 5, 6 and 'Z of aluminum, form a frame of ti -shape fastened to the magneto. Thearni 5 sets on the open side of the magnet across the two arms tl'icreoi and magnetically separates the magneto and dynamo. The intermediate part8 is fas tened across the ends the magnet arms and supports the outer bearing for the neto armature. The arm '4' ts parallel to the arm 5 on the opposite e of he net and forms the base for the complete u The lighting dynamo is of the same wi 4 as the magneto, as can be best seen in 4 and 5, and its length along the arms of the magnet is such as to provide accessibility to the mechanical interrupter 4, as can best be seen from Fig. 6. The dynamo extends across one of the four sides of the magneto and has its armature 8 rotatable on an parallel to the axis of rotation of mag The outer end of the armature shaft neto armature l? The yoke 9 of comparatively soft iroii or steel has a flat base 10 fastened on the arm 5 of the aluminum frame. The arch 11 of the yoke forms a consequent pole of the dynamo and the field circuit is excited by a shunt coil '12 and a series turn 13 mounted on the upwardly projecting pole 14. in a dynamo of comparatively small height and ot a width and length conforming to the lines the magneto, especially When the dynamo is mounted, as shown, on the open side of the permanent magnet. The fiat base 10 of the dynamo aids materially in. forming a compact unit capable of being nicely associated with the engine and its auxiliaries a motor cycle. The arrangement also provides a convenient and accessibl-e place for the automatic switch 15, -which cuts the dynamo in and out of the circuit the proper time in the Well mourn Way. The dynamo is-securely held in position on the magneto by a brass strap 16. By arranging the two armatures 1 an 8 on parallel axes of rotation, the driving ing is simplified. The gears 17 and 18 carried on. the outer. ends of the armature shafts are oi the proper speed ratio, and the chain if h operatively connects those gears, is short and light. The gear 1'? is faston the shaft of the dynamo armature 8, but the gear 18 is connected to the magneto armature shaft 3 through a slip clutch embody ing two friction rings EZOlcose on the shaft and a spring plate 21 fast to the shaft. The slip clutch permits the gear 18 to slip during starting and during periods of excessive acceleration or retardation of the dynamo, thereby safeguarding. the chain 19 and relieving the magneto shaft 3 and the engine of excessive load at certain times. The gearing l7, l8, 19 is iii-closed by a housing member 22 and the automatic switch 15 is for closed by the housing member 23.

From the foregoing it will noiv be apparout that l have disclosed specifically a magneto dynamo unit Whichiscompact and of This arrangement results Having thus described my invention, What I claim is:

1'. In a magneto dynamo unit, a magneto having a permanent magnet of U-form and an armature with its axis extending along the length of the arms of the magnet, a. dynamo mounted on the permanent magnet 03; the magneto and having the axis of its armature parallel to the axis of the armature of the magneto, and gearing operatiyely' connecting the two armatures, the field magnet of the dynamo being magnetically separated from the permanent magnet of the magneto.

2. In a magneto dynamo unit, a magneto having a permanent magnet of U-form and an armature with its axis extending along the length of the arms of the magnet r a dynamo attached to the permanent magnet and having the axis of its armature parallel to the axis of the armature of the magneto, a member of non-magnetic material interposed between the magneto and dynamo and magnetically separating them, and gearing operatiyely connecting the two armatures.

3. In a magneto dynamo unit. a magneto having a permanent magnet of U-form, a dynamo attached to the permanent magnet, a member of-non-magnetic material inter-, posed between the dynamo and magneto and ma neticallv se aratin them. and earin D u 2: b

operatiyely connecting the armatures of the magneto and dynamo.

at. In a magneto dynamo unit, amagneto having a permanent magnet of U-form, a dynamo positioned along one side of the permanent magnet, gearing operatively connecting the armatures of the magneto and dynamo. and a U-frame of non-magnetic material havingone arm interposed between the magneto and dynamo and magnetically separating them, a second arm forming a base for the unit, and an intermediate part connecting the two arms. 7

5. In a magneto dynamo unit, a magneto having a permanent magnet of U-form and an armature with its axis extending along the length of the arms of the magnet, a dynamo fastened in place along one side of the permanent magnet and having thev axis of its armature parallel to'the axis of the ar mature of the magneto, gearing operatively connecting the two armatures, and a U frame of non-magnetic material comprising one arm interposed between the magneto anddynamo, a second arm forming a base for the unit, and an intermediate part supporting a magneto armature-bearing at the ends of the arms of the permanent magnet.

6. Ina magneto dynamo unit. a magneto having a permanentJmagnet of U-form, -a dynamo fastened thereto and having a yoke with a flat base positioned along one side of the permanent magnet. a member-of nonmagnetic material interposed between the magneto and the base of the dynamo and magnetically separating them, and gearing operati ely connecting the armatures of the magneto and dynamo.

7. Ina magneto dynamo unit. a magneto having a permanent magnet of U-form and an armature with its axis extending along the length of the arms of the magnet, a

' be unaffected one by the other.

'magneto. and a timing le er'projecting directly upward from the mechanical interrupter along the side of the dynamo oppo site the driving gearing therefor.

8. A combined magneto and dynamo unit comprising the combination of a magneto consisting of a permanent magnet and an armature mounted in bearings for rotation between the poles of the permanent magnet with its axis parallel to the length of the arms of the magneto. a dynamo attached to the permanent magnet with its axis of rotation parallel to the axis of rotation of the magneto armature and having an electromagnetic field, and gearing connecting the shafts of the magneto and dynamo, the magneto and dynamo having their fields mag- 'netically separated from each other so as to 9. A combined-magneto and dynamo unit comprising the combination of a magneto having a permanent magnet of U-form and an armature mounted in bearings forrota} tion between the poles of the permanent magnet, a dynamo positioned along one side of the permanent magnet with its axis of rotation parallel to the axis of rotation of the magneto armature and having an electromagnetic field, gearing connecting the shafts of the magneto and dynamo, and a non-magnetic member interposed between the magneto and the dynamo, the magneto and dynamo being rigidly secured together with the non-magnetic member between them, whereby a unitary structure'is produced in which the fields of the magneto and the dynamo are unaffected one by the other.

10. A-combined'magneto and dynamo unit comprising the combination of a magneto consisting of apermanent magnet and an armature mounted in bearings for rotation between the poles of the permanent magnet with its axis parallel to the length of the arms of the magnet. a dynamo mounted on the permanent magnet with its axis of rotation parallel to the axis of rotation of the magneto armature. gearing connecting the shafts of the magneto and dynamo, and a non-magnetic member interposed between the magneto and dynamo. the magneto and dynamo being rigidly secured together with the non-magnetic member between them, whereby a unitary structure is produced in which thefields' of the magneto and dynamo are unaliected one by the other.

11. A combined magneto and dynamo unit comprising the combination of a magneto consisting of a permanent magnet of U-form and an armature mounted in bearings for a rotation between the poles of the permanent magnet, a dynamo having its axis of rotation parallel to the axis of rotation of the magneto armature and having an electrically excited field member with a fiat base positioned along one side of the permanent magnet of the magneto, gearing connecting the shafts of the magneto and dynamo, and a non-magnetic member interposed between the magneto and the flat base of the dynamo, the magneto and dynamo being rigidly secured together with thehon-magnetic member between them, whereby a unitary structure is produced in which the fields of the magneto and dynamo are unaffected one by the other.

12-. Acombined magneto and dynamo unit comprising the combination of a magneto consisting of a permanent magnet of U-form and an armature mounted in bearings for rotation between the poles of the magnet with its axis parallel to the length of the arms of the magnet, a dynamo positioned rupter along the side'of the dynamo opposite the driving gearing therefor.

In testimony whereof I afiix my signature.

QTTO HEINS.

Witnesses:

ROLF LINDENHAYN, LEON F. Acme. 

